A Comparative Experimental Analysis of Natural Gas Dual Fuel Combustion Ignited by Diesel and Poly OxyMethylene Dimethyl Ether

Kendyl Ryan Partridge, Deivanayagam Hariharan, Abhinandhan Narayanan, Austin Leo Pearson, Kalyan Kumar Srinivasan and Sundar Rajan Krishnan ()
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Kendyl Ryan Partridge: Department of Mechanical Engineering, The University of Alabama, Tuscaloosa, AL 35487, USA
Deivanayagam Hariharan: Department of Mechanical Engineering, The University of Alabama, Tuscaloosa, AL 35487, USA
Abhinandhan Narayanan: Department of Mechanical Engineering, The University of Alabama, Tuscaloosa, AL 35487, USA
Austin Leo Pearson: Department of Mechanical Engineering, The University of Alabama, Tuscaloosa, AL 35487, USA
Kalyan Kumar Srinivasan: Department of Mechanical Engineering, The University of Alabama, Tuscaloosa, AL 35487, USA
Sundar Rajan Krishnan: Department of Mechanical Engineering, The University of Alabama, Tuscaloosa, AL 35487, USA

Energies, 2024, vol. 17, issue 8, 1-24

Abstract: Dual-fuel low-temperature combustion is a possible solution for alleviating the tradeoff between oxides of nitrogen and soot emissions in conventional diesel combustion, albeit with poor combustion stability, high carbon monoxide, and unburned hydrocarbon emissions at low engine loads. The present work compares emissions and combustion (heat release and other metrics) of both diesel and poly-oxy methylene dimethyl ether as high-reactivity fuels to ignite natural gas while leveraging spray-targeted reactivity stratification, which involved multiple injections of the high-reactivity fuels. The experiments included six parametric sweeps of: (1) start of first injection, (2) start of second injection, (3) percentage of energy substitution of natural gas, (4) commanded injection duration ratio, (5) rail pressure, and (6) intake pressure. The experiments were performed on a 1.8 L heavy-duty single-cylinder research engine operating at a medium speed of 1339 rev/min. Not-to-exceed limits for the indicated oxides of nitrogen emissions, maximum pressure rise rate, and the coefficient of variation of the indicated mean effective pressure were set to 1 g/kWh, 10 bar/CAD, and 10%, respectively. The indicated emissions decreased and combustion improved significantly for both fueling combinations when the experimental procedure was applied.

Keywords: dual fuel; RCCI; natural gas; low-temperature combustion; OME (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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